Infiniti FX35 / FX45. Manual - part 41

AT-92

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

1.

CHECK A/T CHECK INDICATOR LAMP

1.

Start the engine with selector lever in “P” position. Warm engine to normal operating temperature.

2.

Turn ignition switch ON and OFF at least twice, then leave it in the OFF position. 

3.

Wait 10 seconds.

4.

Turn ignition switch ON. (Do not start engine.)

Does A/T CHECK indicator lamp come on for about 2 seconds?

YES

>> GO TO 2.

NO

>> Go to 

AT-170, "A/T Check Indicator Lamp Does Not Come On"

.

2.

JUDGEMENT PROCEDURE

1.

Turn ignition switch OFF.

2.

Keep pressing shift lock release button.

3.

Move selector lever from “P” to “D” position.

4.

Release accelerator pedal. (Set the closed throttle position signal ON.)

5.

Depress brake pedal. (Stop lamp switch signal ON.)

6.

Turn ignition switch ON. (Do not start engine.)

7.

Wait 3 seconds.

8.

Move the selector lever to the manual shift gate side. (Manual mode signal ON.)

9.

Release brake pedal. (Stop lamp switch signal OFF.)

10. Move the selector lever to “D” position. (Manual mode signal OFF.)
11. Depress brake pedal. (Stop lamp switch signal ON.)
12. Release brake pedal. (Stop lamp switch signal OFF.)
13. Depress accelerator pedal fully and release it.

>> GO TO 3.

3.

CHECK SELF-DIAGNOSIS CODE

Check A/T CHECK indicator lamp. Refer to "Judgement Self-diagnosis Code".
If the system does not go into self-diagnostics. Refer to 

AT-102

, 

AT-155

, 

AT-164

, 

AT-165

.

>> DIAGNOSIS END

Judgement Self-diagnosis Code

If there is a malfunction, the lamp lights up for the time corresponding to the suspect circuit.

No.

Malfunctioning item

No.

Malfunctioning item

1

Revolution sensor 

AT-108

12

A/T interlock 

AT-139

2

Direct clutch solenoid valve 

AT-147

13

A/T 1st engine braking 

AT-141

3

Torque converter clutch solenoid valve 

AT-124

, 

AT-126

14

Start signal 

AT-97

4

Line pressure solenoid valve 

AT-128

15

Accelerator pedal position sensor 

AT-130

5

Input clutch solenoid valve 

AT-143

16

Engine speed signal 

AT-112

6

Front brake solenoid valve 

AT-145

17

CAN communication line 

AT-94

7

Low coast brake solenoid valve 

AT-151

, 

AT-153

18

1st gear function 

AT-114

8

High and low reverse clutch solenoid valve 

AT-149

19

2nd gear function 

AT-116

9

PNP switch 

AT-102

20

3rd gear function 

AT-118

10

A/T fluid temperature sensor 

AT-132

21

4th gear function 

AT-120

11

Turbine revolution sensor 

AT-106

22

5th gear function 

AT-122

TROUBLE DIAGNOSIS

AT-93

< SERVICE INFORMATION >

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Erase Self-diagnosis

• In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is

stored into the control unit as necessary during use by the user. This memory is not erased no matter how
many times the ignition switch is turned ON and OFF. 

• However, this information is erased by turning ignition switch “OFF” after performing self-diagnostics or by

erasing the memory using the CONSULT-III.

SCIA8153E

AT-94

< SERVICE INFORMATION >

DTC U1000 CAN COMMUNICATION LINE

DTC U1000 CAN COMMUNICATION LINE

Description

INFOID:0000000001327165

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a vehicle, and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission
with less wiring. Each control unit transmits/receives data but selectively reads required data only.

On Board Diagnosis Logic

INFOID:0000000001327166

Diagnostic trouble code “U1000 CAN COMM CIRCUIT” with CONSULT-III or 17th judgement flicker without
CONSULT-III is detected when TCM cannot communicate to other control units.

Possible Cause

INFOID:0000000001327167

Harness or connectors
(CAN communication line is open or shorted.)

DTC Confirmation Procedure

INFOID:0000000001327168

NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.

 WITH CONSULT-III

1.

Turn ignition switch ON. 

2.

Select “ECU INPUT SIGNALS” or “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION”
with CONSULT-III.

3.

Start engine and wait for at least 6 seconds.

4.

If DTC is detected, go to 

AT-96, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-III”.

DTC U1000 CAN COMMUNICATION LINE

AT-95

< SERVICE INFORMATION >

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Wiring Diagram - AT - CAN

INFOID:0000000001327169

TCWM0496E